‘All in One 4-Week Systems’ deliver just enough chemical for your pool to get by in IDEAL conditions. So they need help from time to time. Your ‘Algae Preventer’ component may be exhausted or your chlorine disinfectant is depleted.
- Using fresh reagents or INSTA-TEST™ 6-in-1 test strips then follow the Guru Guidelines for the full FIX.
Check & review your filtration:
- Medium still fresh?
- Baskets all clear?
- Pressure ok?
- Pump hours appropriate for the season?